Laser & Optoelectronics Progress, Volume. 61, Issue 8, 0800001(2024)
Diffuse Optical Imaging Technologies and Applications (Invited)
Fig. 1. Three types of optical transmission
Fig. 2. Three imaging modalities of diffuse optics, and
Fig. 3. Absorption spectra of oxyhemoglobin and deoxyhemoglobin[6]
Fig. 4. Light absorption profile through issue detected by pulse oximetry[7]
Fig. 5. Schematic of pulse oximetry in two modes [4]. (a) Transmission mode; (b) reflection mode
Fig. 6. Fundus images acquired by the oxymap system using dual-wavelength approach[30]. (a) Color-coded oximetry vessel map, where different colors represent oxygen saturation levels; (b) (c) retinal images acquired at 570 nm and 600 nm, respectively
Fig. 7. Flowchart of DOS [35]
Fig. 8. Schematic of DOS and DOT[35]. (a) DOS; (b) DOT
Fig. 9. Subject measurement with the DOS instrument [46]
Fig. 10. Distribution of sources and detectors of DOT system
Fig. 11. Schematic of parallel plate diffuse optical tomography instrument[56]
Fig. 12. Chromophore concentration maps in the breasts of a patient with tumor in the right breast [35]
Fig. 13. Evaluation of brain function [59]. (a) Imaging cap structure of DOT system, subject position, and audiovisual stimuli; (b) schematic of source and detector locations, where blue represents the detector and other colors represent light sources in different areas; (c)‒(f) evaluation of distributed brain function mapping by imaging hierarchical language processing
Fig. 14. Functional imaging of neonatal brain[60]. (a) A newborn infant wearing the DOT system; (b) source-detector channels; (c) source positions and detector positions shown on the scalp surface of the head model
Fig. 15. Hemodynamics monitoring of visual cortex [61]. (a) Schematic of imaging area; (b) image slice in the axial direction; (c) distribution of oxyhemoglobin at different time; (d) concentration changes of oxyhemoglobin (red), deoxyhemoglobin (blue), and total hemoglobin (green)
Fig. 16. Measurement device[62]. (a) Instrument setup; (b) optical fiber holder (front); (c) optical fiber holder (back); (d) schematic of imaging
Fig. 18. FMT of small animal tumor models [78]. (a) FMT for small animal imaging; (b) imaging of mouse tumor models using FMT
Fig. 19. FMT of breast cancer in humans[79]. (a) FMT system for breast cancer detection; (b) 2D cross-section images acquired by FMT, including total hemoglobin concentration, oxygen saturation, reduced scattering coefficient, and ICG concentration; (c) 3D reconstruction using FMT
Fig. 20. ICG imaging in mice using FMT [83]
Fig. 21. Diagram of SFDI system[115]
Fig. 22. SFDI monitoring of burn wounds in pork model[120]
Fig. 23. Spatial frequency domain oxygenation imaging system [122]
Fig. 24. Cervical carcinoma screening[123]. (a) Photograph of cervical carcinoma tissue specimen; (b) reduced scattering coefficient map; (c) backscattering probability map; (d) light spreading length map; (e)‒(h) stained histological images of the highlighted regions in Fig.24 (a)‒(d)
Fig. 25. ROC curves using two and six parameters, respectively [124]
Fig. 26. Comparison of fluorescence imaging in tumor models[125]
Fig. 27. Tumor growth and treatment monitored by with spatial frequency domain imaging[132]
Fig. 28. Spatial frequency domain imaging for apple tissue measurement [133]
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Bowen Song, Yanyu Zhao. Diffuse Optical Imaging Technologies and Applications (Invited)[J]. Laser & Optoelectronics Progress, 2024, 61(8): 0800001
Category: Reviews
Received: Jun. 19, 2023
Accepted: Sep. 1, 2023
Published Online: Apr. 11, 2024
The Author Email: Zhao Yanyu (yanyuzhao@buaa.edu.cn)